[GRASS-user] Patch raster maps very slow - Is there a way to speed this up?

I have generated DEM tiles (65ish) from LIDAR data in its natural projection NC state plane feet (the area covered is about 300 squared miles). I have reprojected them into UTM 17 nad 83. These DEMs are 1m resolution. I am using r.patch and it has been running for three days now and it is 45%

[GRASS-user] RAM and r.patch

I have 6Gb of RAM on a quad core intel 2.5ghz processor. I believe this question is answered by the way my system is working, but would allowing more RAM to be used by r.patch be benificial. If yes, how else I assume that the process is processor limited. kind regards, -- Stephen Sefick Let's

Re: [GRASS-user] Searching Docs about 3D geological modelisation

Hi Thomas, I am pretty sure that the program (maybe not the source code) are in the public domain. I'll contact the author, and post back. Cheers, Dylan On Mon, Jan 11, 2010 at 6:56 AM, Thomas Adams thomas.ad...@noaa.gov wrote: Dylan, Can you tell me how to obtain TPROGS? Is it only

[GRASS-user] Running Grass Remotely

I would like to run grass remotely on a server running ubuntu. I would like to be able to forward the X11 to my desktop running ubuntu 9.10 over the network. Any help or pointers to reading material would be greatly appreciated. thanks, -- Stephen Sefick Let's not spend our time and resources

[GRASS-user] Definition of Category for Vectors

Hi guys I've been reading Neteler/Mitasova book and I have a question: Regarding vector data, what is a category? and Why do I need to have category readers/writters? Because, for What I understood, a category is like a Feature ID that links a geometry to its attributes in a DB. Is this correct?

[GRASS-user] Re: Patch raster maps very slow - Is there a way to speed this up?

I would try to warp patch the data with GDAL command line tools (gdalwarp in this case), then import the result into GRASS. See also http://trac.osgeo.org/gdal/wiki/UserDocs/GdalWarp#WillincreasingRAMincreasethespeedofgdalwarp Hermann Original Message Subject: Patch

Re: [GRASS-user] Definition of Category for Vectors

Pedro Roma wrote: Hi guys I've been reading Neteler/Mitasova book and I have a question: Regarding vector data, what is a category? A category specifies the category a vector feature belongs to, e.g. highway, major road, minor road for lines or land cover type for areas. See also

Re: [GRASS-user] Running Grass Remotely

Stephen, you can easily tunnel X11 over ssh, just add -X. I am doing that routinely (note the capital X). ssh -X myserver Then run GRASS as usual on the remote machine and all monitors, windows will come over locally. When using VNC, I prefer to install http://www.karlrunge.com/x11vnc/ which

Re: [GRASS-user] RAM and r.patch

stephen sefick wrote: I have 6Gb of RAM on a quad core intel 2.5ghz processor. I believe this question is answered by the way my system is working, but would allowing more RAM to be used by r.patch be benificial. If yes, how else I assume that the process is processor limited. r.patch

Re: [GRASS-user] Running Grass Remotely

stephen sefick wrote: I would like to run grass remotely on a server running ubuntu. I would like to be able to forward the X11 to my desktop running ubuntu 9.10 over the network. Any help or pointers to reading material would be greatly appreciated. Connecting to the server with ssh -Y

Re: [GRASS-user] Running Grass Remotely

On Mon, Jan 11, 2010 at 11:56 PM, Glynn Clements gl...@gclements.plus.com wrote: stephen sefick wrote: I would like to run grass remotely on a server running ubuntu.  I would like to be able to forward the X11 to my desktop running ubuntu 9.10 over the network.  Any help or pointers to

Re: [GRASS-user] Running Grass Remotely

Markus wrote: you can easily tunnel X11 over ssh, just add -X. I am doing that routinely (note the capital X). ssh -X myserver Then run GRASS as usual on the remote machine and all monitors, windows will come over locally. if you get sick of typing that, or username@ part if different

Re: [GRASS-user] Patch raster maps very slow - Is there a way to speed this up?

stephen wrote: I have generated DEM tiles (65ish) from LIDAR data in its natural projection NC state plane feet (the area covered is about 300 squared miles).  I have reprojected them into UTM 17 nad 83.  These DEMs are 1m resolution. so the region is like 5 x 5 rows,columns? I am

[GRASS-user] interpolate nodata area

Hi: Can grass interpolate these nodata areas from nearby valid data ? If yes, I wang to call the method in java code. ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user

Re: [GRASS-user] interpolate nodata area

On Tue, Jan 12, 2010 at 5:27 AM, maven apache apachemav...@gmail.com wrote: Hi: Can grass interpolate these nodata areas from nearby valid data ? Yes, with the r.fillnulls script: http://grass.osgeo.org/grass64/manuals/html64_user/r.fillnulls.html It is essentially a wrapper around

Re: [GRASS-user] Histogram Matching

On Thu, Dec 17, 2009 at 11:52 AM, andry rustanto getux...@gmail.com wrote: Dear All, Please inform me how to do histogram matching in grass gis, thank you indeed.. In 2004, we had a master student implementing this. I could send you the scripts if you are interested. Ideally they would be